fix: Discrepancy between liquidity and farm aprs

[memoyil]

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PR-Codex overview

This PR focuses on improving code readability and performance by refactoring functions to use useCallback and useMemo.

Detailed summary

• Refactored functions in SingleFarmV3Card.tsx to use useCallback for better performance.
• Updated calculations in AprCalculator.tsx to use BigNumber for accuracy.
• Refactored functions in FarmV3ApyButton.tsx to use useMemo for better performance.

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